For the past week, the conservative super PAC American Crossroads bas been running a nearly $1 million ad buy against Donnelly for his votes in support of President Obama’s agenda. But a gang of liberal organizations led by Senate Majority Leader Harry Reid’s Majority PAC, announced Tuesday that they are launching a $1 million campaign against Mourdock this week to highlight his opposition to the auto bailout.

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Majority PAC will be joined by AFSCME and Center Forward in the TV ads.